stryker 125 Workshop-manual : Page 30

          2. GENERAL INFORMATION                                                             STRYKER 125/150

 POOR PERFORMANCE (ESPECIALLY AT IDLE AND LOW SPEEDS)



 Inspection/Adjustment                          Symptom                      Probable Cause

 Check ignition timing



                                                                           Faulty CDI unit
                                   Correct                Incorrect
                                                                           Faulty A.C. generator

 Check carburetor pilot
 screw adjustment

                                                                           Mixture too lean (turn screw in)
                              Correctly adjusted    Incorrectly adjusted   Mixture too rich (turn screw out)


 Check carburetor
 insulator rubber for air
 leaks
                                                                           Carburetor not securely
                                                                           tightened
                                  No air leak             Air leaks        Faulty intake manifold gasket
                                                                           Deformed carburetor O-ring
                                                                           Broken vacuum tube
 Remove spark plug and
 install it into spark plug
 cap to test spark by
 making it contact the
 engine                                                                    Faulty or fouled spark plug
                                                                           Faulty CDI unit
                                                      Weak or inter-       Faulty A.C. generator
                                 Good spark                                Faulty ignition coil
                                                      mittent spark
                                                                           Broken or shorted high tension
                                                                           wire
                                                                           Faulty ignition switch
 Check A.C. generator


                                                                           Faulty A.C. generator
                                    Good                   Faulty          Damaged vacuum tube
                                                                           Clogged air vent hole




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